Reinforced glass and process of manufacturing the same.



E. BENEDICTUS. 1 BEINFORGBDGLASS AND PROCESS OF MANUFACTURING THE SAME.

' APPLICATION FILED JAN.1 1, 1910.

1,098,342, J Patented May 26,1914.

mvsN'roR gjfi g g EDOUHRD Haven/eras Ml W To all'whom it mag concern: l i

- sheet of celluloid interposed.

STATES PATENT OFFICE.

EDOURD ennnnrcrus, or PARIS, rnancn.

' immroncnn e Ass AND rnocnss or manurac'ruiame THE samn.

Patented a 26, 1914.

Application filed January 11 1910. Serial No. 537,557.

Be it known that I, EDOUARD BENEDICTUS,

i a citizen of the French Republic, and residing at 25 Rue Foureroy, Paris, France, ar-

- 5 tistic painter, haveinvented a certain new and useful Reinforced Glass and Process of Manufacturing the Same, of which the following is a full, clear, and exact description.

This invention relates to the application of sheet celluloid for strengthening or backing glass and it has reference more particularly to a product formed of two sheets of glass-united by the interposition and stick--- ing or pasting'between them of a sheet of celluloid. I

is a cross section through a sheet of glass with'the reinforcingsheet of celluloid; above the same; Fig. 2, is a cross section through two sheets of glass with the reinforcing This new industrial product presents in particular the following essential characteristics:Its resistance to blows or shocks is much greater than that of ordinary glass. In case of breakage the (glass cracks or stars without becoming detached from the backing of.celluloid 'which supports it. It is therefore particularly applicable for the construction of the window panes and screens of vehicles (automobiles, cabs, car- 'riages, omnibuses, railway carriages,'boats,

and the like), Owing to its resistant strength it on the one hand diminishes the chances-of breakage and on the other hand especially it renders practically impossible personal injuries or wounds which might result from the breakage of windows and of window panes, lights and the. h e of houses because its resistance to breakage or perforation enables it to oppose. an efficacious defense to burglars who might attempt to'g'et through without noise into an isolated-- licpressure isto be" recommended since by this means considerable'pressure may be obtained, The =;.sizes of thesheets of glass 0f c l lo d ay bees desired. The

. In the accompanying drawingF-Figure 1 glass. Its application is also apgropriate to celluloid may be extremely thin. It may be applied, if desired, in the pasty form, by coating one of the sheets ofglass with a layer of celluloid in solution and by compressing the other sheet of glass upon it;

but I' consider this procedure less practical.

The sheets of glass to be assembled together, need not be strictly flat; the want of planity of window glass so far from being an inconvenience actually becomes a condi tion very favorable to the-resistant strength of the product, if care be taken to assemble the sheets, the convexity of one sheet being turned together the convexity of the other sheet.

The transparency of the product is quite comparable with that of pane glass, but I may of course employ in this manufacture,

in lieu of transparent celluloid, colored or ornamented celluloid, interposed between sheets of glass which themselves may be transparent or ornamented. I can obtairfin this way quite original efiects in glass windows. v

Instead of two sheets of glass,-I may use three or a larger number between which are placed as many sheets of celluloid as is necessary; I may also secure in an adhesive manner a sheet .of celluloid to a single sheet of lass.

though the use of celluloid appears preferable by reason of its solidity, I may replace it by sheets of viscose, casein or other translucent and strong material which will enable the sheets of glass to be stuck together.- In the subjoined claims I, of course,

use the expression celluloid in a sense broad enough to include its equivalents. 1

Having thus described my invention what I claim as such and desire to secure by Letters Patent is 1. As a new article of manufacture laminated, adherent sheets, of glass and flexible celluloid, the'surface of the celluloid firmly adhering to the glass whereby a composite is provided having substantially the transage of the glass. 2. As". a new article of manufacture, a

sheet of-flexible celluloid faced on both sides a by glass and firmly united thereto b an antogeneous joint, the transparency 10 the composite being substantially that ofglass,

and the celluloid and its adhesion to the glass being of such strength as to substantially prevent the scattering of glass frag-- ments upon the sh attering of-the glass.

3. The process of reinforcing glass which consists in softening onl strong sheet of flexiblece uloid with a volatile solvent and heavily pressing the plastic surface of the celluloid against a sheet of glass, the pressure applied being,sufliciently heavy to produce a surface adhesion between the celluloid and glass such that the trans arency of the glass is attained by the composite and the scattering of glass frag- -ments on the shattering of the glass is prevented, substantially as described.

4. The process of manufacturing. reinthe surface of a,

forced glass; which comprisesthe steps of v EDOUARD BENEDICTUS.

Witnessesi CHARLES IRWIN, J AGQUES SIGQURNEY. 

